Pselaphodes daweishanus, Huang & Li & Yin, 2018

Huang, Meng-Chi, Li, Li-Zhen & Yin, Zi-Wei, 2018, Eleven new species and a new country record of Pselaphodes (Coleoptera: Staphylinidae: Pselaphinae) from China, with a revised checklist of world species, Acta Entomologica Musei Nationalis Pragae 58 (2), pp. 457-478 : 464-465

Pselaphodes daweishanus sp. nov.

( Figs 7A , 8 )

Type material ( 1 ex.). HOLOTYPE: ♁, CHINA: ‘ China : Yunnan, Daweishan N. R., 22°54.317′N, 103°41.961′E, 2124 m, 28.x.2016, Huang & Wang leg. [ṅṁ† DZƜŊ ḨOiṖữ]’ ( SNUC).

Diagnosis of male. Length 3.10 mm; antennomere VII slightly broadened mesally, antennomere IX nearly triangular, with round projection on upper surface, antennomere X with large projection at base, antennomere XI narrowed near base; metaventral processes broad apically; protrochanter and profemur with acute ventral spines, protibia with small but distinct projection at apex; mesotrochanter with three ventral spines.

Description. Male ( Fig. 7A ). Body reddish brown, BL 3.10 mm. Head longer than wide, HL 0.71 mm, HW 0.63 mm; each eye composed of about 35 facets. Antennomeres IX–XI ( Fig. 8A ) forming distinct club, antennomere VII slightly broadened mesally, antennomere IX nearly triangular, with disc-like projection on upper surface, strongly projected at anteromesal margin, antennomere X with distinct and large projection at base, antennomere XI narrowed near base. Pronotum ( Fig. 8B ) as long as wide, PL 0.64 mm, PW 0.65 mm, roundly narrowed from middle to apex. Elytra wider than long, EL 0.92 mm, EW 1.23 mm. Metaventral processes ( Fig. 8C ) broadened at apex. Protrochanter with long and acute ventral spine, profemur ( Fig. 8D ) with large ventral spine; protibia ( Fig. 8E ) with small but distinct projection at apex; mesotrochanter ( Fig. 8F ) with three acute ventral spines; metatrochanter and metafemur ( Fig. 8G ) simple. Abdomen broad at base and narrowed apically, AL 0.83 mm, AW 1.23 mm. Sternite IX ( Fig. 8H ) semi-membranous. Length of aedeagus ( Figs 8 I–K) 0.57 mm; median lobe asymmetric, endophallus composed of one elongate and two short sclerites.

Female. Unknown.

Comparative notes. The new species is placed as a member of the P. walkeri species group based on the asymmetrical male antennomere VII. Males of the new species can be readily separated from similar congeners by the form of the antennal club, the broad metaventral processes, spination of the legs, as well as structure of the aedeagus.

Etymology. The specific epithet refers to the type locality of the new species, i.e., Daweishan National Nature Reserve; adjective.

Distribution. China: Yunnan.

Figures

Fig. 7. Dorsal habitus of Pselaphodes males. A – P. daweishanussp. nov; B – P. elongatus sp. nov. Scale bar: 1 mm.

Fig. 8. Male diagnostic features of Pselaphodes daweishanus sp. nov.A – antennal club; B – pronotum; C – metaventral process, in lateral view; D – protrochanter and profemur; E – apex of protibia; F – mesotrochanter and mesofemur; G – metatrochanter and metafemur; H – sternite IX; I–K – aedeagus, in dorsal (I), lateral (J), and ventral (K) view. Scale bars: 0.3 mm in A–B, D, F–G; 0.2 mm in C, I–K; 0.1 mm in E, H.